The Wheel and Axle
Wheels and axles help you move things and helps you with work.The axle is a rod that connects to a wheel. Spinning the axle causes the wheel to move around. Wheel and axles are very helpful.The force applied to the wheel causes the wheel to move it. Wheels and Axles help us do things faster. The force used to turn the wheel changes into a lager force through the axle. Because the axle is smaller and doesn't move as far. Some examples are cars, roller blade, bikes, and eggbeaters are all wheels and axles.
Wheel and Axle - Simple Machines | Mocomi kids